Adhesive applying apparatus



G. ROCK ADHESIVE APPLYING APPARATUS Aug. 4, 1936.

Filed-Jan. 22, 1951 s Sheets-Sheet 2 //71 e/7/d/ f. z. fan/r /Y/W 4 77 Aug. v4, 1936. G. L. ROCK 2,049,928

I I ADHESIVE APPLYING APPARATUS Filed Jan. 22, 1931 I5 Sheets-Sheet 3 wrema/ 6 Z. 506% Patented Aug. 4, 1936 UNITED STATES 2,049,928 ADHESIVE APPLYING APPARATUS George L. Rock, Cicero, Ill., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application January 22, 1931, Serial No. 510,462

5 Claims., (CI. 91-44) This invention relates to adhesive applying apparatus, and more particularly to an apparatus for cementing insulating heads to a core.

An object of this invention is to provide a sim- 5 pie, eflicient, and practical apparatus for applying a predetermined quantity of adhesive material to a core.

In accordance with the object of the present invention, an apparatus is provided with rotatlo able chucks for receiving a core to which insulated heads are to be cemented, the chucks being operatively connected to a mechanism for rotating them with the core and heads a predetermined number of revolutions and during the rotation of 15 these members transversely extending jets are disposed in engagement with the core adjacent the heads for simultaneously depositing an adhesive material thereupon. Operatively connected to the mechanism for rotating the chucks 20 is an adhesive supplying mechanism having a combined piston and valve arrangement communicating with each of the jets and operative in timed relation to supply a continuous fiow of adhesive material to the core and the insulated 25 heads while the jets are effective.

The invention will be more fully understood from the following description, taken in connection with the accompanying drawings, in which Fig. 1 is a side elevational view of the appara- 30 tus;

Fig. 2 is an enlarged sectional view taken along the line 2-2 of Fig. 1;

Fig. 3 is an enlarged side elevational view of a portion of the apparatus;

35 Fig. 4 is a fragmentary sectional view of the apparatus, portions thereof being shown in elevation;

Fig. 5 is a sectional view taken along the line 5-5 of Fig. 3; 1

40 Fig. 6 is a sectional view taken along the line 66 of Fig. 5, and

Fig. '1 is a sectional view taken along the line 1--1 of Fig. 6.

Referring now to the drawings whereinlike 45 reference numerals designate similar parts throughout the various views, the numeral i designates a housing mounted upon a suitable support or table II and having extending therethrough and journaled in the walls thereof a sup- 50 porting shaft l2 upon which is mounted a relatively large gear l3. Mounted upon the shaft l2 adjacent the gear I3 is a ratchet wheel M which is keyed to the gear and arrangedto rotate therewith upon the shaft. Adjacent the ratchet wheel 55 I4 and mounted upon the shaft I2 is a lever 15 having transversely extending portions l6 and I1. A spring pressed pawl 18 is pivotally mounted upon the portion i6 of the lever 15 and has its free end disposed in engagement with the ratchet wheel l4 so as to engage teeth 19 formed upon the periphery of the ratchet wheel. Secured to the outer end of the portion l6 of the lever I5 is a connecting rod 22 extending downwardly and into a cushioning unit 23 (Fig. 1), wherein it is adjustably secured in place by a lock nut. The cushioning unit 23 includes a compression spring 24 in engagement with which one end of a plunger 25 is disposed, the other end of the plunger being pivotally connected to an arm 26 which is keyed to a shaft 21. A bracket 28 secured to the support provides a pivotal support for the shaft 21 and also supports an adjustable stop 29 into engagement with which a weighted lever 30 is arranged to be moved. An actuating lever 32 having one end fixed to the shaft 21 and the other end provided with a pedal 33 constitutes a means for rotating the shaft 21 and actuating the arm 26, the cushioning unit 23, the connecting rod 22, the lever IS, the pawl l8, and the ratchet wheel l4 for imparting a rotary movement to the gear l3.

formed thereon a pinion 39 which interengages the gear l3 and is arranged to be rotated thereby. Integral with the shaft 38 is a stop arm 48 rotatable with the shaft and arranged to engage the portion I1 of the lever i5 for stopping the rotation of the shaft 38 at a predetermined position and 35 after a predetermined number of revolutions. A driving chuck 4| is fixed to the outer end of the shaft 38 and is formed in general contour to receive and hold against displacement one endof a core 42 to which spaced insulating heads 43 and 44 are to be cemented.

In alignment with the shaft 38 and at a spaced position from the driving chuck 4| is a driven chuck 45 rotatably mounted in a sleeve 46 which is slidably disposed in a bracket 41 and normally 45 urged inwardly by a spring 48 which is housed in the bracket 41. The driven chuck 45 has its inner surface recessed as at 49 to receive one end of the core 42, the other end of the core being receivable in the driving chuck 4|. 50

The outer end of the sleeve 46 isslit as at and receives a chuck actuating lever 56 pivotally secured to the sleeve and fulcrummed at 51. The upper end of. the lever 56 has an aperture 58 through which a connecting rod 59 extends, the 5 versely extending pin or finger 1I arranged to engage a lifting lever 12, which is carried pivotally byasupporting bracket 19 and has a finger is disposed 'ac'ollar 1m;- The gear in I" of-the unit portion" disposed in engagement with an up- 5 wardly extending member 15 secured to a cementing unit '19 (Fig. 6); The bracket 19 is U-shaped in general contour (Figs. 5, 6 and 'l) the leg portions 99 and, M extending downwardly in spaced relation from a supporting bar 92 which supports'the brackets 41 and 19 and extends through I a boss on the housing I9 where it is held by pins or the like.

The cementing unit 19 has conical shaped recesses 99 and 9I (Fig. '7) for receiving conical shaped ends of supporting pivots 92 and 99, respectively, the pivot member 92 having a reduced portion receivable in an aperture in the leg portion 89 while the pivot member 99 is provided with external threads and receivable in a threaded aperture in the leg portion 8|. Passageways 94 and 95 in the pivot members 92 and 99 communicate with. passageways 99 and 91, respectively, in the cementing unit 19, the passageways 99 and 91in the cementing unit extending forwardly (to the right Fig. 7) and communicating with passageways in a head portion 99 which constitutes a part of the cementing unit 19 together with transverselyextending jets 99 and I99, the jets having longitudinal extending passageways communicating with the passageways in the head portion 99. The forward end of the cementing unit 19 is normally urged downwardly about the pivot members 92 and 99 (Figs. 5 and 6) by spiral tension springs I95, the movement of the cementing unit being controlled by the lifting lever 12.

The supply unit for the adhesive material consists of a casing H9 (Figs. 1, 3 and 5) having valve piston units for forcing a continuous supply of adhesive material'to each of the jets 99 and I99. These valve piston units, indicatedgenerally at III and H2 (Fig. 5), are identical in construction and a description of one will apply equally well to'them both. With the unit II I (Fig. 3) there is shown a vertically extending valve piston I I5, the lowerend being hollow as at H9 and having elongated apertures II 1 and I I9 The lower end of the valve piston H5 is slidably receivable in a cylinder II9 which has oppositely disposed passageways I29 and I2I extending therefrom, the passageway I29 communicating with a supplychamber I22 which communicates with the interior of the casing I I 9, while the pas sageway, I2I communicates with a valve l29 in a m is disposed'uponfone sideof a valve rotating bar I94 (FigsfLand 2) and meshing with teeth 1 I95 formedfin 'the valve rotating bar, while a gear I99 for the unit H2 is positioned on the opposite side of the valve rotating bar and interengages the teeth I95 upon that side of the bar. The valve rotating bar I94 is allowed to move longitudinally between pairs of vertically extending guides I91 and I99 and is limited in its longitudinal movement by a pin I99 (Fig. 3) which extends upwardly from the-cover I99 into an elongated slot I49 in the bar.

The collar I99 is pivotally connected to one end of a bracket I which is rigidly secured to apiston moving lever I49 and which has an adjusting screw I41 extending through a threaded aperture therein and resting upon a shoulder I49 of the cover I99. The lower end of the lever I49 1 is operatively connected to a pull rod I59 which extends through the cover I99 and an expansion spring I5I where the lower end thereof receives a nut upon which the spring rests. The spring I5I, together with a portion of the pull rod I59 2 extending therethrough, is encased in a cylinder I52 which is carried by the cover I99 and extends downwardly into the casing H9. The upper portion of the lever I49 extends forwardly and downwardly providing a cam surface I55 25 I99 and positioned upon spaced rollers I99 which as are disposed between the bar I 59 and the bar I94. Situated adjacent the cam roller I51 and carried by the piston moving bar I59 is a lug or projection I92 in engagement with which retaining latches I69 and I94 are arranged to be moved by an expansive spring I95, the ends of which are connected thereto. The latches I99 and I94 are disposed between the guides I91 and I99, respectively, and pivotally secured thereto while projections thereof extend downwardly and are arranged to be engaged by upwardly extending cams I91 carried by the bar I94. The cams I91 are in the form of lugs integral with the valve rotating bar I94 and disposed at spaced as shown in Fig. 2.

A means for moving the bars I94 and I59 consists of a double yoke I19, the forked ends of which straddle rollers HI and I12 carried by the forward ends of the bars. A rocking lever I19 pivotally mounted at I14 on the casing II9 has one end thereof pivotally connected to the yoke I19 adjacent the center of the yoke, the other end being operatively connected to a draw bar I15 and urged forwardly by an expansive spring I19. The draw bar I15 is pivotally connected to I the lever 19, thus connecting the adhesive mate rial supplying means with the work supporting and rotating means so that they will operate simultaneously. 6 r In the operation of the apparatus the pedal 99 3 is, normally in a forward position ready to be moved to the left and into the position shown in Fig.1: While in the normal or forward position,

the1chuck45 is held in its open position; that is, ,in its position farthest from the chuck H by the .cam'99 (Fig. 3)which is positioned in engagement with the roller 91,-holding the upper end of the cam lever 95 in its farthest position to the positions so right (Fig. 5), and by the aid of the connecting 7 rod 59 holding the upper end of the chuck actuating lever 56 in its farthest position to the right and the lower end of the chuck actuating lever in its farthest position to the left, which, due to its connection with the driven chuck 45, holds the driven chuck away from the driving chuck 4I. While in this position, the operator may insert the core 42 so that one end will be positioned in the chuck 4| and the other end positioned in the chuck 45. The pedal 33 may then be moved to the left and into the position shown in Fig. 1, moving the weighted lever 30 to the upper position shown and moving the connecting rod 22 upwardly. Due to the connection of the pawl I0 witha tooth l9 of the ratchet I4, (Figs. 3, 4 and 5), the ratchet wheel will be rotated a predetermined amount, thus rotating the gear I3 and imparting movement to the levers I5 and I0. The rotation of the gear I3, due to its engagement with the pinion 39 of the shaft 38, will rotate the shaft 38 through two complete revolutions, thus imparting a similar rotation to the core 42. The portion ll of the lever I5 is arranged to be positioned adjacent the shaft 38 so that the stop arm 40 will engage therewith and stop the rotation of the chuck M at a desired position.

As soon as the gear I3 starts its rotative movement, the lever I0 (Figs. 3 and 5), is moved to swing the cam 69 from beneath the roller 61 of the cam lever 65, allowing the spring 48 to move the chuck 45 inwardly and grip the adjacent end of the core 42 and at the same time the pin II, which has held the lifting lever I2 in such a position as to hold the cementing unit 16 in its upper or inoperative position, releases the lifting lever I2 and allows the springs I05 to move the cementing unit into a position so that the jets 99 and I00 will rest upon the core 42. As soon as the jets engage the core 42, adhesive material is forced through the jets and upon the core and the insulating heads 43 and 44 due to the actuation of the units III and H2. The units III and H2 are actuated simultaneously and as the lever I13 is actuated due to the movement of the lever I0 to move the upper end of the lever H3 inwardly, movement is first imparted to the piston rotating bar I34 moving it to the left (Fig. 3) between the gears I3I and I36 of the valve pistons H3, and rotating them in opposite directions which rotation moves the apertures I I8 into communication with the passageways I2I, the valves I23 and the supply lines I24. The piston moving bar I58 is held against inward movement by the latch I63 engaging the lug I62 until the cam I6I which is positioned at the right of the projection of the latch moves the latch free of the lug I62, this occurring after the valve pistons have been rotated. The inward movement of the piston moving bar I58 moves the rollers I51 with respect to the levers I46, thus allowing the spring I5I to move the levers I46 downwardly rocking upon the ends of the adjusting screws I41 and moving the valve pistons I I5 downwardly. During the movement of the valve pistons II5, downwardly, the adhesive material which has been previously drawn into the cylinders II9 by upward movementof the valve pistons I I5 as described hereinafter will be forced through the apertures I I8, the passageways I2I, the valves I23, the supply lines I24, through the pivot members 92 and 93, through the passageways 96 and 91 in the cementing unit I6 and through the jets 99 and I00, where it will be deposited upon the core 42 adjacent the insulating heads 43 and 44 and upon the insulating heads adjacent the core during the rotation thereof. The operative connection of the various actuating parts are such that at the beginning of the movement of the lever 32 the chuck 45 will be freed and allowed to be moved 5 inwardly by the spring 48, the cementing unit 18 will be freed, by movement of the lifting lever I2, so that the jets 99 and I00 may rest upon the core 42 and at the same time the valve pistons II5 will be rotated to move the apertures H8 into 10 communication with the passageways I2I. During the rotation of the gear I3 by the actuation of the lever 32, the chuck 4I together with the core passes beyond a tooth I9 of the ratchet I4 ready to rotate the sprocket when the foot lever 32 is again actuated. During the movement of the lever I0 into its normal position, the pin II will engage and move the lifting lever I2, moving the cementing unit I6 upon the pivot members 92 and 30 93 and against the tension of the springs I05 to lift the nozzles 99 and I00 free of the core 42. The movement of the lever I0 will also move the cam 69, which is aflixed to the lever I0, into engagement with the cam roller 61 and actuate the 35 cam lever 65, the connecting rod 59, the chuck actuating lever 56, to move the chuck 45 outwardly and free the part which has been cemented. At the beginning of the movement of the lever 32 toward its normal position, the lever I13 40 wil be actuated first to impart movement to the piston rotating bar I34 moving it to the right (Fig. 3) to rotate the valve pistons 5 so as to position the elongated apertures III in communication with the passageways I20. The piston moving bar I58 is held against movement toward the right (Fig. 3) by the latch I64 engaging the lug I62 until the pin I68 engages and moves the projection I66 of the latch sufficiently to free the latch from the lug. Upon being freed by the latch, the piston moving bar I58 will be moved outwardly, moving with it the rollers I51 which will engage the cam surfaces I55 of the levers I46 and move the levers upwardly, during which movement the valve pistons II5 will be moved upwardly, drawing adhesive material from the supply chamber I22 into the cylinder I I9. The adhesive material supplying units therefore are made in readiness to force adhesive material to the jets 99 and I00 during the movement of the lever 32 into its normal position. Y

Although the invention has been described in connection with one particular type of article to be treated, it is'to be understood that the apparatus may be adapted to apply material to difl'erent types of articles without departing from the spirit and scope of the present invention.

What is claimed is:

1. In a machine for securing spool heads to cores, spaced nozzles for applying adhesive ma- 7 terial to the juncture of the heads and core, means for rotating the heads and core, and means operated in timed relation therewith for ejecting a. predetermined quantity of the adhesive material from each nozzle. 75

means for imparting a rotative movement to the core, means for applying material upon the core it the Junctureot the heads therewith during the dered effective by the movement or said member -in one direction for imparting a rotary movement to' the article, a material applying means, means for moving said material applying means intoengagement with the article during the rotation thereof, and means rendered eflective by the movement or said actuating member in another direction for simultaneously moving said material applying means away from the article and moving said supporting means free of the article.

4. In a material applying apparatus, a sup- 2. In a material applying apparatus, supporting means for a core having spaced heads thereon,

porting element for an article, a material applying means, a movable actuating means, means rendered effective by one movement of said actuating means for imparting rotary movement to the article and normally restrained spring means I rendered effective by said movement of said actuating means tor moving said material applying means into engagement'with the article.

5. In a material applying apparatus, a supporting means for an article, a material applying means, a movable actuating means, means rendered eflective by one movement of said actuating means for imparting rotary movement to said supporting means and the article and moving said material applying means into engagement with 15 the articlejmeans rendered effective at the end of said movement oisaid actuating means for stopping rotation of said supporting means and means for moving said materiah applying means free of the article. I

GEORGE L. ROCK. 

